Backpack



FIG. 1 is a perspective view of a backpack, showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a perspective view of the backpack, showing a compartment of the backpack in an open configuration.

The broken line drawings of the penguin plush toys, shown in FIG. 8, form no part of the claimed design. 

CLAIM The ornamental design for a backpack, as shown and described. 